Belimo LF24-MFT-S-20 Actuator Motor

The Belimo LF24-MFT-S-20 is a high-performance spring return actuator engineered for precise control in HVAC systems requiring fail-safe operation. Operating on a 24VAC/DC power supply, this 35 in-lb torque motor provides reliable mechanical spring return for dampers and valves. Its Multi-Function Technology (MFT) allows for field-configurable control signals, including 4-20mA (500 Ohm), PWM (1500 Ohm), floating point, and on/off signals. This versatility makes it an ideal multi-function proportional actuator for modern building automation systems. The integrated auxiliary switch provides essential position feedback or allows for the sequencing of peripheral equipment. Designed for durability, the brushless DC motor ensures consistent timing and eliminates the risk of burnout due to stalling. The Belimo LF series is recognized for its robust construction, simplifying installation in tight mechanical spaces while maintaining high positioning accuracy for optimized airflow and proportional control.

• Fail-Safe Reliability: Mechanical spring return ensures the system defaults to a safe position during power loss.
• Flexible Control: Field-adjustable MFT parameters accommodate modulating actuator requirements and various input signals.
• Enhanced Feedback: Built-in SPDT auxiliary switch enables seamless integration with control logic and monitoring systems.
• Extended Service Life: Brushless DC motor technology reduces maintenance and prevents overheating during end-of-travel conditions.
• Easy Installation: Compact design with a universal neck clamp fits most standard damper shafts and valve assemblies.

How do I configure the control signal on the LF24-MFT-S-20?
The Multi-Function Technology allows the actuator to be programmed using the Belimo PC-Tool or ZTH US hand-held device to match specific 4-20mA or PWM control requirements.

What is the purpose of the -S suffix in this model?
The -S indicates the inclusion of an integrated auxiliary switch, which provides a dry contact signal for verifying the actuator's position.

Can this actuator be used in both 24VAC and 24VDC circuits?
Yes, the Belimo LF24-MFT-S-20 is designed for universal power compatibility, functioning efficiently on both 24VAC and 24VDC infrastructures.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.